Shimano  SLX Shadow Rear Derailleur RD-M663-SGS

Shimano SLX Dyna-Sys takes legendary Shimano shifting to the next level of perfection. The shadow design lessens the changes of snagging a branch or clipping a rock while the direct cable routing lowers shifting effort. The wide pivots keep shifting smooth and consistent for mile after mile.

• Provides accurate and effortless shifting optimized for Shimano's 10-speed Dyna-Sys MTB system
• Low-profile Shadow design reduces risk of impact damage and helps prevent the chain from slapping the chainstay, for a quieter ride
• Direct cable routing for effortless shifting
• Wide pivots for consistent shifting
• CAPACITY: 43T
• 235g